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Swapping Values in Two Columns
Message
De
04/09/2013 10:33:19
 
 
À
03/09/2013 09:21:38
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows 8
Network:
Windows 2000 Server
Database:
Visual FoxPro
Application:
Desktop
Divers
Thread ID:
01581882
Message ID:
01582084
Vues:
127
>>>>I'm trying to switch the values from two columns. Here's my code:
>>>>
>>>>
update Items;
>>>>   SET cDesc = cIntDesc ;
>>>>   , cIntDesc = cDesc
>>>>
>>>>This is a VFP database.
>>>>Shouldn't that work?
>>>>What is happening is that both columns get the original value that was in cIntDesc.
>>>
>>>
>>>The changes have to occur in some order. You'll have to use a variable to hold one value temporarily.
>
>>I understand. I just had a very strong memory of using code like this before. Maybe it was on a SQL Server database which apparently allows you to do this.
>
>That is one of the few glitches in vfp SQL that is non-Standard. Discussed that a while back with Aleksey (when vfp still was maintained by MS) and his comment was along the lines "don't hold your breath hoping for this behaviour [in vfp] to change, deep xBase roots showing here".

Thanks Thomas.
Frank.

Frank Cazabon
Samaan Systems Ltd.
www.samaansystems.com
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